Home / 20,403.15-30,586.01-7,931.49

Finding the Fourth Proportional to 20,403.15, 30,586.01 and 7,931.49

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Solution

The fourth proportional to 20,403.15, 30,586.01 and 7,931.49 is: 11,889.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,403.15 : 30,586.01 = 7,931.49 : x
  2. Step 2: Convert to fraction form
    20,403.15/30,586.01 = 7,931.49/x
  3. Step 3: Cross multiply
    20,403.15x = 30,586.01 × 7,931.49
  4. Step 4: Simplify right side
    20,403.15x = 242,592,592.80
  5. Step 5: Solve for x
    x = 242,592,592.80/20,403.15
  6. Step 6: Final answer
    x = 11,889.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.